1. Chase Kriedeman, MacKenzie Skartveit, Cassidi Perkins
Mollusca 
Chase Kriedeman, MacKenzie Skartveit, Cassidi Perkins 

2. There are over 85,000 Mollusca are recognized.
General Description 
They are largely known for being highly diverse invertebrates, not only in size but the habitats they choose as well.
 There are over 85,000 Mollusca are recognized. 
Mollusca have similar organisms such as snails, octopuses, squids
Camouflage- helps them hide
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3. Symmetry 
Bilateral- cuts right in half 

4. Radula- anatomical structure used for feeding
Herbivores 
Omnivores 
Carnivores 
Radula- anatomical structure used for feeding
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5. Circulation 
   mollusks have an open circulatory system, which means that their blood is not restricted to blood vessels and flow around the body.   They have a three chambered heart, two atria and one ventricle.   Mantle- wall that covers the visceral mass 

6. Nephridia- acts as an organ for excretion Releases ammonia in blood
Nephridia releases outside the body 
Gills- enters and leaves in the same spot
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7. Response 
In adaptation to a directed movement there was not only an evolution of eyes, but also a change in body 
 The head evolved as the centre of sensory activity (cephalization).
They have two pairs of main nerve cords: the visceral cords - the internal organs and the pedal ones serving the foot and the ganglia.

8. Movement
Mollusca. The mollusks’ muscular system is primarily made up of the foot that allows for movement. They move by suctioning and burrowing down. Jet Propulsion- ejecting out jet fluid to move 
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9. Reproduction
They reproduce sexually via external fertilization where the eggs are shot into the water by the female and the male fertilizes them.
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10. Respiration  A Mollusk has tubes called siphons that bring water in and out of their bodies this happens so that they can get oxygen and give off carbon dioxide. They have gills that help with this.

11. Cephalopod- Octopi and Squid
Classes of mollusca 
Cephalopod- Octopi and Squid 
Gastrpoda- Snails and Slugs 
Polyplacophora- Chitons 
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